Law wise -- the Gujjars are OBC. But they find it difficult to compete with Yadavs, so they are fighting to be classified as SC/STs. The Meena (the community to which the police officers accused of violence belong to) are SC/STs and do not want the Gujjars to compete against them.
But here is the interesting part -- traditionally, NONE of the castes involved have suffered due to Casteism. They have all been tremendously powerful within society at various times. The Gujjars and the Meena both belong to the Kshatriya Varna have actually been Rulers.
Unfortunately, because of reservations, even the thought of fair competition and selection by merit has died (since it is easier to change the law use reservations to get ahead instead of working hard or by being better qualified).
A society without meritocracy naturally tends towards the use of unfair means. Any surprise that such a society is more violent?
Arjun Sign, Periyar and co knew that the path they were laying was going to produce chasms in the country and would result in an uglier society. And yet the knee jerk reaction to blame Brahmins, who are of the few people who do not rely on reservations and have no interest on whether who remain as OBCs or who becomes SC/STs.
Blaming Manu or Brahmins in this case is outright ridiculous in this case. Gopal Krishna %u2013 next time, it would help if you try to understand a subject before you comment on it (Wikipedia and Google n